#786264 (PyPy3) No.148 試験監督（3）

• 問題: No.148 試験監督（3）
• ユーザー: fumofumofuni
• 提出日時: 2022-08-08 17:49:11
• 言語: PyPy3 (7.3.15)
• 結果: RE (最新)
  AC
  (最初)
• 実行時間: -
• コード長: 11,402 bytes
• コンパイル時間: 334 ms
• コンパイル使用メモリ: 81,704 KB
• 実行使用メモリ: 69,960 KB
• 最終ジャッジ日時: 2023-10-19 06:47:12
• 合計ジャッジ時間: 2,618 ms
• ジャッジサーバーID （参考情報）: judge14 / judge11

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	73 ms; 61,104 KB
testcase_01	AC	84 ms; 61,108 KB
testcase_02	AC	140 ms; 61,108 KB
testcase_03	AC	150 ms; 61,108 KB
testcase_04	AC	156 ms; 61,108 KB
testcase_05	AC	128 ms; 61,104 KB
testcase_06	RE	-
testcase_07	RE	-
testcase_08	RE	-
testcase_09	RE	-
testcase_10	RE	-
testcase_11	AC	42 ms; 55,372 KB

ソースコード

T=int(input())
mod=1000000007
lt=[1,641102369
,578095319
,5832229
,259081142
,974067448
,316220877
,690120224
,251368199
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,67347853
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,722054885
,228338256
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,762479457
,746536789
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,778773518
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base=1000000
def fact(n):
    ret=lt[n//base]
    for i in range(n//base*base+1,n+1):
        ret=ret*i%mod
        #print(ret)
    return ret
def solve():
    C,P=map(int,input().split())
    if P*2-1>C:
        print(0)
        return
    if P>=mod:
        print(0)
        return
    if (C-P*2+1)//mod!=(C-P+1)//mod:
        print(0)
        return
    N=(C-P+1)%mod
    M=(C-P*2+1)%mod
    print(fact(N)*pow(fact(M),mod-2,mod)%mod)
    return
for i in range(T):
    solve()